39 lines
1 KiB
C
39 lines
1 KiB
C
#include "libnazgul.h"
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int msgBufferInfoTabInit(msgPoolData * poolDataTabAddr, int poolIndex)
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{
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msgBufferInfoTabId bufferInfoTabId;
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int bufferInfoTabFd;
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msgBufferInfo *bufferInfoTabAddr;
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int bufferInfoNb;
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int i;
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//récuperer l'ID du BufferInfoTab;
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strcpy(bufferInfoTabId, poolDataTabAddr[poolIndex].bufferInfoTabId);
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printf("msgBufferInfoTabId %d open >>%s<<\n", poolIndex,
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bufferInfoTabId);
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bufferInfoTabFd = shm_open(bufferInfoTabId, O_RDWR, SHM_DEFAULT_MODE);
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if (bufferInfoTabFd < 0) {
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NZG_ERROR("msgBufferInfoTabId open", bufferInfoTabId);
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return -1;
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}
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/** on regarde dans le tableau d'infos de buffer **/
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bufferInfoNb = poolDataTabAddr[poolIndex].bufferNb;
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bufferInfoTabAddr = mmap(NULL, bufferInfoNb * sizeof(msgBufferInfo),
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PROT_WRITE | PROT_READ, MAP_SHARED,
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bufferInfoTabFd, (off_t) 0);
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for (i = 0; i < bufferInfoNb; i++) {
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bufferInfoTabAddr[i].ownerPid = (pid_t) - 1;
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}
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if (munmap(bufferInfoTabAddr, bufferInfoNb * sizeof(msgBufferInfo)) < 0) {
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perror("munmap");
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return -1;
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}
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return 0;
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}
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